WINDSHIELD WIPERS AND WASHERS
CONTENTS
page page
GENERAL INFORMATION
MULTI-FUNCTION SWITCH ................ 1
WINDSHIELD WASHERS .................. 2
DESCRIPTION AND OPERATION
WINDSHIELD WASHERS .................. 2
WIPER BLADES ......................... 2
DIAGNOSIS AND TESTING
MULTI-FUNCTION SWITCH – WINDSHIELD
WIPER .............................. 3
WINDSHIELD WASHERS .................. 3
WINDSHIELD WIPER SYSTEM CONDITIONS . . 3
WIPER MOTOR SYSTEM .................. 6
REMOVAL AND INSTALLATION
MULTI-FUNCTION SWITCH ................ 8
WASHER NOZZLE ....................... 8
WASHER RESERVOIR PUMP .............. 9
WASHER RESERVOIR .................... 9
WIPER ARM AND BLADE ................. 9
WIPER ARM LINKAGE OR CAP ............ 10
WIPER BLADE ELEMENT ................ 10
WIPER BLADE .......................... 9
WIPER MOTOR ASSEMBLY MOUNTING
GROMMET .......................... 11
WIPER MOTOR ASSEMBLY ............... 11
WIPER MOTOR ........................ 10
CLEANING AND INSPECTION
WIPER BLADES ........................ 11
ADJUSTMENTS
WIPER ARM ........................... 11
GENERAL INFORMATION
MULTI-FUNCTION SWITCH
WARNING: VEHICLES ARE EQUIPPED WITH AN
AIRBAG, REFER TO GROUP 8M, RESTRAINT SYS-
TEMS FOR STEERING WHEEL OR COLUMN SER-
VICE PROCEDURES.
The multi-function switch (Fig. 1) contains:
• Turn signals
• Hazard warning
• Headlamps
• Headlamp beam select
• Parking lamps
• Panel dimmer
• Fog Lamp
• Headlamp optical horn
• Windshield wiper
• Pulse wipe
• Mist wipe
• Windshield washer switches.
The multi-function switch is mounted center of the
steering column. There are two levers, one on each
side of the steering column. The left side controls the
signaling and lighting. The right side controls the
windshield wiper and washer system. To use the
washers pull lever toward the driver. The mist is a
single wipe operation by pushing lever down and
releasing the lever. Intermittent wiper operation is
controlled by the Body Control Module (BCM). The
lever has a selection of delay intervals and by turn-
ing lever the wiper will cycle every half second to 36
seconds depending ON the vehicle’s speed. The wiper
has two cycle two speeds.
The windshield wipers will only operate when the
ignition switch is in the ACCESSORY or IGNITION
position. Fuse 15, located in the Junction Block, fuses
8 and 14 in the Power Distribution Center block, pro-
tects the wiper/washer system circuitry. The wiper
motor also has an internal non-serviceable circuit
breaker to provide protection against motor stall con-
ditions.
The wiper and washer motors have magnetic fields
created by internal permanent magnet. Electric
power applied to the motor armature, located in the
magnetic field, causes the motor to turn.
The wiper system internal operation uses the low
speed motor circuit in combination with intermittent
wipe relay. The washer pump motor has one internal
circuit and therefore operates at one speed.
The wiper and washer system switch located on
the steering column selects the mode of operation of
the motors. The switch provides input to the BCM,
which in turn operates the two relays. The intermit-
tent wipe relay turns the wiper ON and OFF. The
other changes the HIGH/LOW speeds. The switch
also provides power to the washer pump motor.
The intermittent wiper system, in addition to low
and high speed, has a delay mode. The delay mode
has a range of 1/2 to 18 seconds when the vehicle
speed is over 10 m.p.h.. The wiper delay times will
automatically double to a range of 1 to 36 seconds
when the vehicle speed is less than 10 m.p.h.. The
delay is controlled by a variable resistor in the wiper
switch and BCM.
JX WINDSHIELD WIPERS AND WASHERS 8K - 1
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